This is a nice idea; so; people confirm that cash was made available through a teller, and you can move it around; Double spending of inputted cashes is not possible because it is blockchained;
So, The idea I have for building ontop of SAFEX is a simple payment processor; if there are trustworthy tellers, then people can use SAFEX which also you don’t need to understand to use, if you use an applications running SAFEX;
Obviously, if you want to make your own application you need to understand SAFEX;
There is a business in the works; for Fiat to Safecoin in the works;
The SAFEX protocol and the business ontop don’t have much to do with eachother; one defines the P2P digital asset transfer, the business is itself;
So, novel ways for proving money transfer are quite interesting; I’ve considered, and also many thanks to @frabrunelle for illuminating the need to establish a place for people to request features; as the specification, and implementation is being made available.
So, SAFEX defines Tags, and Values; the Tags can be defined as anyone pleases; and when people use apps with SAFEX they can access specific Tags, and if that Tag defines some blockchain storage of a cash receipt that’s fine. Abra can utilize the SAFEX protocol and establish their P2P Money Transfer Network on SAFE Network; and it’ll be easy to interface with all the applications that are using the SAFEX, as a standard;